中山環境エンジ List of Products and Services

We would like to introduce a case study of a fish processing factory in Miyagi Prefecture that implemented our "wastewater treatment facility." At this factory, the wastewater treatment equipment was not functioning properly, resulting in an inability to discharge the treated water, which had to be disposed of as industrial waste. We immediately installed a lease machine with a membrane package that could process the wastewater, and after two years of temporary operation, we earned their trust and secured the contract for the main project. As a result, compared to the time when they were disposing of treated water as industrial waste, the running costs have significantly decreased. Additionally, a denitrification tank, which was not present in the previous equipment, was added, allowing for stable operation through nitrogen removal and membrane treatment. The person in charge has expressed their satisfaction, stating that daily operations have become easier. [Case Study] ■Challenges - Wastewater treatment equipment was not functioning properly, preventing discharge. - Treated water had to be disposed of as industrial waste. *For more details, please refer to the PDF document or feel free to contact us.

• Drainage and ventilation equipment

We would like to introduce a case study of a medical product factory in Ibaraki Prefecture that implemented our "wastewater treatment facility." The customer requested to make the treated water suitable for keeping fish, and we proposed membrane treatment, which was adopted on the condition that it meets the guaranteed water quality standards for treated water. As a result, we maintained water quality significantly below the required standards and discharged clean treated water. The customer is now raising fish in the treated water as requested. [Case Study] ■Challenges - The request to make treated water suitable for keeping fish - Meeting the guaranteed water quality standards for treated water is a condition *For more details, please refer to the PDF document or feel free to contact us.

• Turbid water and muddy water treatment machines

We would like to introduce a case study of a rice cracker factory in Ibaraki Prefecture that implemented our "wastewater treatment facility." The factory did not have any wastewater treatment equipment and expressed a desire to engage in environmental conservation, prompting them to consider wastewater treatment solutions. We conducted water quality and quantity surveys tailored to their busy season and proposed a plan that would not cause noise issues, taking into account the residential area. This plan was adopted. As a result, by introducing sludge into the adjustment tank, we were able to reduce the unpleasant odor from the rice washing wastewater. Since we did not use any chemicals such as deodorants, the running costs have also been kept low. Additionally, to avoid noise issues, we selected an aeration blower that operates underwater, ensuring that there have been no noise complaints from local residents. [Case Study] ■ Challenges - Desire to engage in environmental conservation - Consideration of the residential area *For more details, please refer to the PDF document or feel free to contact us.

• Drainage and ventilation equipment

We would like to introduce a case study of our "wastewater treatment facility" implemented at a cut vegetable factory in Ibaraki Prefecture. Previously, the factory did not have wastewater treatment equipment, which sometimes polluted the irrigation channels. Considering the customer's commitment to environmental conservation in Kasumigaura and the potential for future production increases, they decided to explore wastewater treatment options. Our company conducted detailed water quality and quantity surveys, and we made a proposal that satisfied the customer in terms of both equipment and cost, leading to its adoption. As a result, the irrigation channels have been kept clean due to the discharge of clean water, and there have been no exceedances of wastewater standards to date, contributing to the environmental conservation of Kasumigaura. Additionally, even during peak seasons when wastewater volume increases, stable treatment has been achieved. [Case Study] ■ Challenges - There was no wastewater treatment equipment, which sometimes polluted the irrigation channels. - There was a commitment to environmental conservation in Kasumigaura. - Wastewater treatment options were considered with future production increases in mind. *For more details, please refer to the PDF document or feel free to contact us.

• Drainage and ventilation equipment

The removal rate varies significantly depending on the quality of the raw water, but if a strong floc can be formed by adding coagulants, high removal rates can be expected for oil and suspended solids (SS). Advantages: - High capability for removing oil and SS, with higher removal rates compared to grease traps. - Operation without chemical dosing is possible, although the removal rate will decrease. - More compact compared to coagulation and sedimentation. Disadvantages: - Chemical dosing and pressurized flotation incur chemical costs. - Sludge is generated, leading to disposal costs.

• Water Treatment

At Nakayama Environmental Engineering in Tsukuba City, Ibaraki Prefecture, we sell liquid chemical products, cubitainer-type chemicals, and powdered chemicals. Our lineup includes sodium hypochlorite, sodium hydroxide (caustic soda), liquid polymer coagulants, sludge settling agents, and more. If you need various chemicals, please feel free to contact us by phone or email. 【Product Lineup】 ■ Liquid chemical products ■ Cubitainer-type chemicals ■ Powdered chemicals *For more details, please visit the external link page or feel free to contact us.

• Safety and consumables

The wastewater treatment method called "dewatering equipment" reduces waste disposal costs by dewatering excess sludge and sludge generated from processes such as pressure flotation. We propose the optimal dewatering equipment considering the quality of the raw water and the equipment flow. 【We reduce waste disposal costs by dewatering sludge!】 Nakayama Environmental Engineering Co., Ltd. provides comprehensive services from investigation, design, construction, to maintenance management of water treatment plants. The attached document summarizes all eight wastewater treatment methods proposed by Nakayama Environmental Engineering Co., Ltd. We can accommodate various treatment methods tailored to the specific conditions of both wastewater treatment and water supply equipment from these eight options, so please take a look and feel free to contact us if you have any inquiries!

• Drainage and ventilation equipment

The "rotating disc method" of wastewater treatment can be considered one of the contact oxidation methods. It involves rotating a disc that is 37% submerged in water, allowing microorganisms attached to the surface of the disc to treat the wastewater. Since it does not use a blower, it significantly reduces electricity costs. 【No blower means reduced electricity costs!】 Nakayama Environmental Engineering Co., Ltd. provides comprehensive services from investigation, design, construction, to maintenance management of water treatment plants. The attached document summarizes all eight wastewater treatment methods proposed by Nakayama Environmental Engineering Co., Ltd. We can accommodate various treatment methods tailored to the specific conditions of both wastewater treatment facilities and water supply facilities from these eight options. Please take a look, and feel free to contact us if you have any questions or need further consultation!

• Drainage and ventilation equipment

The drainage treatment method called "pressurized flotation" removes oil and suspended solids by floating them with coagulants and fine bubbles. It is often operated in combination with the aforementioned equipment as a pre-treatment facility. 【It demonstrates effectiveness when combined with various equipment!】 Nakayama Environmental Engineering Co., Ltd. provides comprehensive services from investigation, design, construction, to maintenance management of water treatment plants. The attached document summarizes all eight drainage treatment methods proposed by Nakayama Environmental Engineering Co., Ltd. We can accommodate various treatment methods tailored to the specific conditions of drainage treatment facilities and water supply facilities from these eight options. Please take a look, and feel free to contact us if you have any questions or need consultation!

• Drainage and ventilation equipment

The wastewater treatment method called "ozone treatment" is used as a pretreatment before biological treatment. It is effective for the removal of n-Hex and BOD, as well as deodorization. However, it may not be effective depending on the quality of the raw water, so our company offers tests with raw water taken back to our facility and on-site testing as well. We propose a reduction in running costs as an alternative to pressurized flotation. 【We support on-site and take-home testing!】 Nakayama Environmental Engineering Co., Ltd. provides comprehensive services from investigation, design, construction, to maintenance management of water treatment plants. The attached document summarizes all eight wastewater treatment methods proposed by Nakayama Environmental Engineering Co., Ltd. We can accommodate various treatment methods tailored to the specific conditions of wastewater treatment facilities and water supply facilities from these eight options, so please take a look, and feel free to contact us if you have any questions or inquiries!

• Drainage and ventilation equipment

The wastewater treatment method called "contact oxidation method" involves introducing a fixed bed or moving carrier into an aeration tank, allowing microorganisms that adhere to these surfaces to decompose waste. Compared to standard activated sludge, it is somewhat effective in saving space and reducing sludge generation. 【Effectively decomposing waste with the power of microorganisms!】 Nakayama Environmental Engineering Co., Ltd. provides comprehensive services from investigation, design, construction, to maintenance management of water treatment plants. The attached document summarizes all eight wastewater treatment methods proposed by Nakayama Environmental Engineering Co., Ltd. We can accommodate various treatment methods tailored to the specific conditions of wastewater treatment facilities and water supply facilities from these eight options, so please take a look and feel free to contact us if you have any inquiries!

• Drainage and ventilation equipment

The wastewater treatment method called "recirculation type" essentially processes the activated sludge method in a single tank. It is an extremely simple facility and is suitable for small to medium-sized wastewater treatment. Since there are times when the blower can be stopped, combining it with a balancing tank can help reduce electricity peaks in the summer. 【Recommended for small to medium-sized wastewater treatment!】 Nakayama Environmental Engineering Co., Ltd. provides comprehensive services from investigation, design, construction, to maintenance management of water treatment plants. The attached document summarizes all eight wastewater treatment methods proposed by Nakayama Environmental Engineering Co., Ltd. We can accommodate various treatment methods tailored to the specific situations of wastewater treatment facilities and water supply facilities from the eight options available. Please take a look, and feel free to contact us if you have any questions or need consultation!

• Drainage and ventilation equipment

The wastewater treatment method called "Standard Activated Sludge Method" is the most orthodox system that combines "microbial treatment + sedimentation" using activated sludge. It can be said to be number one in terms of performance nationwide. 【An orthodox system with the best performance!】 Nakayama Environmental Engineering Co., Ltd. provides comprehensive services from investigation, design, construction, to maintenance management of water treatment plants. The attached document summarizes all eight wastewater treatment methods proposed by Nakayama Environmental Engineering Co., Ltd. We can accommodate various treatment methods tailored to the specific conditions of wastewater treatment facilities and water supply facilities from these eight options, so please take a look, and feel free to contact us if you have any questions or inquiries!

• Drainage and ventilation equipment

The wastewater treatment method called "membrane filtration" is a process that separates solids and liquids using membranes instead of relying on sedimentation. It excels in space-saving design and can consistently ensure excellent treated water quality. Taking advantage of these benefits, our company offers solutions to customers with limited installation space, those seeking advanced treatment, and those wishing to utilize treated water for reclaimed water systems. 【Ideal for situations with space constraints!】 Nakayama Environmental Engineering Co., Ltd. provides comprehensive services from investigation, design, construction, to maintenance management of water treatment plants. The attached document summarizes all eight wastewater treatment methods proposed by Nakayama Environmental Engineering Co., Ltd. We can accommodate various treatment methods tailored to the specific circumstances of wastewater treatment facilities and water supply facilities from the eight options available. Please take a look, and feel free to contact us if you have any questions or need consultation!

• Drainage and ventilation equipment

This document provides an overview of the eight wastewater treatment methods proposed by Nakayama Environmental Engineering Co., Ltd., which consistently handles everything from the investigation of water treatment plants to design, construction, and maintenance. It includes a variety of major treatment methods tailored to the specific conditions of wastewater treatment facilities and water supply facilities. We utilize our experience, knowledge, and technology to deliver proposals and construction that are suitable for our customers. *For more details, please refer to the PDF document or feel free to contact us.

• Drainage and ventilation equipment

The "Case Studies of Water Treatment Facility Implementation" is a collection of case studies that addresses factory wastewater treatment issues, conducted by Nakayama Environmental Engineering Co., Ltd., which provides comprehensive support from investigation to design, construction, and maintenance of water treatment plants. It includes a variety of major treatment methods tailored to the specific conditions of wastewater treatment and water supply facilities. Utilizing experience, knowledge, and technology, we deliver proposals and construction that are suitable for our customers. Additionally, without conducting an investigation, it is unclear which wastewater treatment method is appropriate. Therefore, we offer free on-site investigations. *However, we will charge for detailed investigations. [Featured Cases] ■ Seafood processing plant 200 m³/d (Membrane treatment) ■ Poultry processing plant 3500 m³/d (Membrane treatment) ■ Rice cracker factory 600 m³/d (Membrane treatment) ■ Dairy factory 300 m³/d (Membrane treatment) ■ Cut vegetable factory 250 m³/d (Standard activated sludge) ■ Rice cracker factory 60 m³/d (Standard activated sludge) ■ Medical product factory 70 m³/d (Membrane treatment) ■ Seafood processing plant 80 m³/d (Membrane treatment) *For more details, please refer to the PDF document or feel free to contact us.

• Water Treatment

We will introduce the main treatment methods that we can propose. The "membrane filtration method" is suitable when there are space limitations for installation or when advanced treatment is desired. It separates solid and liquid using membranes instead of relying on sedimentation, making it space-efficient and capable of consistently ensuring excellent treated water quality. Additionally, we can propose various treatment methods, including the most conventional "standard activated sludge method," which involves microbial treatment with activated sludge and sedimentation, and the "batch method," which is extremely simple and suitable for small to medium-sized wastewater treatment. 【Main Treatment Methods】 ■ Membrane Filtration Method ■ Standard Activated Sludge Method ■ Batch Method ■ Contact Oxidation Method ■ Ozone Treatment ■ Pressurized Floatation Method ■ Rotating Disc Method ■ Dewatering Equipment *For more details, please refer to the PDF document or feel free to contact us.

• Water Treatment

Here is a case study of a rice cracker factory in Fukushima Prefecture that introduced our "water treatment system." At this factory, operations using standard activated sludge equipment faced increased raw water loads, making it difficult to operate with the existing facilities. To enable treatment without increasing the tank capacity, they adopted our membrane guarantee system, which includes remote monitoring. As a result, the membrane unit was placed in the existing tank, allowing for operation without the need for tank expansion. Furthermore, part of the existing tank was repurposed as a backup emergency sludge tank, making the system more compact and reliable during emergencies. 【Case Study】 ■Challenges - Initially operated with standard activated sludge equipment, but raw water loads increased. - It became difficult to operate with the existing facilities. - Wanted to enable treatment without increasing tank capacity. - There were issues with remote monitoring and the membrane guarantee system. *For more details, please refer to the PDF document or feel free to contact us.

• Water Treatment

We would like to introduce a case study of a water treatment facility implemented at a seafood processing plant in Miyagi Prefecture. At this plant, they were operating a batch processing system installed by another company, but frequently experienced sludge floating during discharge, which deteriorated the quality of the effluent. Additionally, due to limited space for expanding the wastewater treatment facilities within the plant, there was a demand for space-saving equipment improvements. As a result, a system that met these conditions, along with in-house operation management, accident analysis, and remote monitoring systems, was evaluated and selected. As a result, despite the high levels of nitrogen and n-hex in the raw water, significant improvements in treated water quality and stable operation were achieved. [Case Study] ■Challenges - Operating a batch processing system installed by another company - Increased production capacity at the plant - Deterioration of effluent quality due to nitrogen levels in the raw water - Limited space for expanding wastewater treatment facilities within the plant *For more details, please refer to the PDF document or feel free to contact us.

• Water Treatment

We would like to introduce a case study of a poultry processing plant in Iwate Prefecture that implemented our "water treatment system." At this plant, they were planning to update their aging standard activated sludge equipment in conjunction with the expansion of their new facility and had requested proposals from several companies. The key selection criteria were equipment that could be operated without skilled operators and equipment that could ensure stable treated water quality. As a result, they adopted our membrane treatment system, allowing them to reduce the aeration tank capacity to about half compared to the standard activated sludge system. The installation of a robust denitrification tank, which was not present in the conventional equipment, contributed to stable operation. [Case Study] ■ Challenges - The standard activated sludge equipment was aging at the time of the new facility expansion. - The conventional equipment required skilled operators, making operation difficult. - Equipment that could be operated without skilled operators and ensure stable water quality. ■ Equipment Introduced - Membrane treatment system *For more details, please refer to the PDF document or feel free to contact us.

• Water Treatment

We package our reliable and proven "liquid membrane" with related equipment to quickly support your wastewater treatment facilities. By utilizing the compactness of membrane separation using liquid membranes, we offer an all-in-one package that includes membrane blowers, suction pumps, control panels, and more, making installation easy and enabling a smooth startup. (The package can be transported by a 15-ton low-floor flatbed truck.) 【Features】 ■ Quick and easy on-site construction in a short period ■ Safe and stable treated water quality ■ If you contract our liquid membrane guarantee system, we guarantee treated water SS: below 2 mg/L ■ Easy to understand with numerical management, maintenance is straightforward, and stable operation is possible ■ By combining with the liquid membrane guarantee system, it can be used with peace of mind for a long time *For more details, please refer to the PDF materials or feel free to contact us.

• Turbid water and muddy water treatment machines

We would like to introduce a case where our wastewater treatment equipment (membrane in liquid) was adopted at the wastewater treatment facility of the mekabu factory. With the full-scale production at the Sendai factory, enhancing the wastewater treatment facility became an urgent issue. To address the constraints of the factory site (ensuring green space), we adopted a membrane in liquid that can strengthen treatment capacity by installing membrane units in idle tanks. We have received feedback from our customers stating, "Currently, we are using it in conjunction with the existing standard activated sludge method, but since the membrane separation activated sludge method absorbs the load fluctuations, it has made operation management easier and we are grateful for that." [Overview of the Equipment (Excerpt)] ■ Product: Processed colored seaweed, mozuku, mekabu ■ Treated water volume: 600-700m3/day (total), 500m3/day (membrane 1, 200 sheets) ■ Issue: March 2012 *For more details, please refer to the PDF document or feel free to contact us.

• Turbid water and muddy water treatment machines

We would like to introduce a case where JUMONJI Chicken Company, Kuji Factory, adopted Kubota's liquid membrane at their poultry processing plant. They planned to construct a poultry processing plant with one of the largest processing capacities due to a large-scale expansion. As a result, the decision to adopt our liquid membrane was based on the points of "being able to consistently provide clean water" and "having a long history and reliability." We have received feedback from our customers stating, "Compared to sedimentation tanks, there is no concern about overflow, allowing us to manage operations with peace of mind." 【Overview of the Equipment (Excerpt)】 ■ Location: Kuji City, Iwate Prefecture ■ Product: Chicken meat product manufacturing ■ Treated water volume: 3,500 m3/day (maximum) ■ Challenge: September 2016 *For more details, please refer to the PDF document or feel free to contact us.

• Turbid water and muddy water treatment machines

"We want to stabilize water quality and enable treatment." "We would like to request a consistent approach from investigation to construction and maintenance." These concerns have been addressed by Nakayama Environmental Engineering. This time, we will introduce a case where an existing wastewater treatment facility (batch type) at a seafood processing plant was modified to a membrane treatment facility. Just like the efforts for HACCP in the manufacturing process, attention is also paid to wastewater treatment, but the previous batch method was complicated and difficult to operate. Therefore, to ensure stable treated water quality without worrying about sedimentation, we modified the existing system to a membrane separation activated sludge method. We also have a maintenance management contract and a membrane warranty system in place, ensuring stable treatment continues. 【Overview of the Equipment】 ■ Type of wastewater: Seafood processing wastewater ■ Treated water volume: 200 m3/day ■ Operation: Initial operation from April 2010, resumed in August 2011 *For more details, please refer to the PDF document or feel free to contact us.

• Water Treatment

Our company primarily handles everything in-house, from the design, construction, and operational management of factory plants to water quality surveys. We leverage the knowledge and experience we have cultivated over more than 30 years, and our representatives in various departments, including the environmental measurement business, are dedicated to supporting our customers. As a company involved in environmental matters, we believe that engaging in appropriate conservation and improvement is a social responsibility. This document includes standard values for various water quality analyses (wastewater, environmental water, drinking water), soil analysis, and waste analysis that support the establishment of a safe and secure water environment. [Contents] ■ Water quality analysis (wastewater, environmental water, drinking water) ■ Uniform wastewater quality analysis items *For more details, please refer to the PDF document or feel free to contact us.

• Analysis and prediction system

At Nakayama Environmental Engineering, we can accommodate various treatment methods tailored to each customer's specific situation. Examples of issues: - Limited space for equipment installation - Strict regulations and a need for exceptionally clean effluent - A desire to minimize initial costs - A desire to minimize running costs - Problems with high oil content in raw water - Issues with high nitrogen levels in raw water causing sludge flotation problems And more. This document introduces wastewater treatment facilities. With our experience, knowledge, and technology, we provide optimal and best proposals and construction, so please feel free to consult us when you encounter difficulties. [Contents (partial)] - Membrane filtration method - Standard activated sludge method - Batch type - Contact oxidation method - Ozone treatment *For more details, please refer to the PDF document or feel free to contact us.

• Drainage and water removal

At Nakayama Environmental Engineering in Tsukuba City, Ibaraki Prefecture, we provide comprehensive services from investigation, design, construction, to maintenance management of water treatment plants. Our motto is to carry out construction with careful and meticulous attention to ensure safety, security, and reliability, contributing to the maintenance and improvement of the environment. This document outlines the flow from investigation to maintenance management. [Contents] ■01: Investigation ■02: Design ■03: Construction ■04: Maintenance Management *For more details, please refer to the PDF document or feel free to contact us.

• Water Treatment

Chuo Environmental Engineering Co., Ltd. proposes water treatment plants that process various types of wastewater from food, fisheries, chemicals, pharmaceuticals, and cleaning factories, ensuring that the treated water meets local water quality standards. We provide a comprehensive service from investigation, design, construction, maintenance management, to water quality analysis. Our motto is to carry out construction with careful and meticulous attention to ensure safety and reliability, contributing to the maintenance and improvement of the environment. The most important aspect when designing wastewater treatment facilities is the "raw water quality survey." The concentration of wastewater changes constantly depending on the factory's operational processes. Relying on data from only a single point can lead to incorrect designs. Our company uses a 24-hour automatic sampling device to collect and analyze samples in accordance with the factory's operating hours, providing accurate raw water quality data. [Features] ■ Using an auto-sampler tailored to the customer's situation for 24-hour surveys or detailed surveys over multiple days. *For more details, please download the PDF or feel free to contact us.

• Water Treatment Plant

The "Liquid Membrane" is a wastewater treatment device that achieves space-saving while solving the issues of treated water quality that were difficult to address with conventional aeration tanks and sedimentation tanks. 【Features】 ■ Clean treated water that does not contain SS or pathogenic E. coli ■ Membrane-treated water can be used directly for reclaimed water ■ Chemical cleaning can be performed while the device is installed in the tank *For more details, please refer to the PDF document or feel free to contact us.

• Water Treatment

Chuo Environmental Engineering Co., Ltd. provides water treatment plants that process various types of wastewater from food, fisheries, chemicals, pharmaceuticals, and cleaning factories, ensuring that the treated water meets local water quality standards. We take responsibility for supporting our customers for a long time after the plant construction, rather than just selling and leaving. Our services extend not only to our own equipment but also to plants from other companies, so please feel free to contact us with your requests. 【Sales Items】 ■ Investigation ■ Design ■ Construction ■ Expansion ■ Repair *For more details, please download the PDF or feel free to contact us.

• Water Treatment Plant