Lianyungang Petrochemical Industrial Base Industrial Wastewater Comprehensive Treatment Center Project
Jiangsu Fangyang Water Co., Ltd. (hereinafter referred to as Fangyang Water) is a wholly-owned subsidiary of Jiangsu Fangyang Group Co., Ltd., established in January 2012. Based in Xuwei New District and serving the Lianyungang Petrochemical Industry Base, Fangyang Water has gradually formed a multi-field, multi-element and all-round comprehensive environmental treatment service system with water supply service sector and sewage treatment sector as the core and environmental monitoring services, environmental engineering and ecological construction as the support.
As a national high-tech enterprise, Fangyang Water adheres to scientific and technological innovation as the core, leads the high-quality development of the enterprise, and has gradually formed a high-level environmental protection water technical team (including two provincial "333" talents, 4 municipal "521" talents and 1 Huaguoshan talent); Actively carry out industry-university-research cooperation with well-known universities and research institutions, and build a number of innovation platforms such as Jiangsu Petrochemical Wastewater Treatment Engineering Technology Center and Provincial Graduate Workstation; He has authorized 60 patents, published more than 60 papers, and participated in the preparation of 7 national, industry and group standards and specifications.
■ Project Overview
Lianyungang Petrochemical Industrial Base Industrial Wastewater Comprehensive Treatment Center Project (hereinafter referred to as the Center) is a large-scale "environmental protection complex" integrating centralized sewage treatment, third-party treatment, regeneration and reuse, and high-salt wastewater treatment for Lianyungang Petrochemical Industrial Base in order to fully implement the dual pilot work requirements of the Ministry of Ecology and Environment's comprehensive environmental treatment trusteeship service and the National Development and Reform Commission's third-party environmental pollution treatment park service.
■ Project scale
The center plans to cover an area of about 600 acres, and the current project covers an area of about 260 acres, with an investment of more than 1 billion yuan, with a processing scale of 55,000 tons/day of conventional line, 13,000 tons/day of high COD line, 25,000 tons/day of high alkali line, 27,000 tons/day of high nitrogen line, 12,000 tons/day of high salt line, 20,000 tons/day of high hard line and 80,000 tons/day of low hard line, effective volume of 120,000 tons of mixing tank farm and a construction area of about 5,000 m2 of R & D center.
■ Technical features
In accordance with the treatment principle of "one enterprise and one pipe, one enterprise and one tank, classified collection, quality treatment, resource allocation, pollution reduction and carbon reduction", the center divides the production wastewater into five treatment lines: "conventional line", "high alkali line", "high COD line", "high salt line" and "high nitrogen line", and divides the production wastewater into two treatment lines of "high hard line" and "low hard line", establishes a centralized sewage regulation mode, and allocates and treats sewage and wastewater resources.
The central regeneration and reuse unit adopts technologies such as "ultrafiltration + reverse osmosis" and "chemical crystallization granulation fluidized bed" to effectively ensure the high reuse rate of wastewater in the park of 70%; The crystalline granulation grain purity can reach more than 90%.
The high-salt wastewater treatment unit of the center takes the special ozone oxidation catalyst for petrochemical high-salt wastewater and the high-efficiency salt-tolerant bacteria agent as the core technology, and realizes the ultra-low discharge of wastewater through the adjustment and optimization of technical parameters and the precise control of artificial intelligence under the condition of TDS concentration of 1%-3% wastewater.
■ Project advantages
The operation and management mode of the center has reached the advanced level in the industry, and promotes the green and high-quality development of the park through the implementation of the integration of water supply and drainage, the integration of upstream and downstream of third-party governance, the centralized collection and allocation of sewage and wastewater, the centralized recycling treatment of sewage and wastewater, and the regional allocation of reclaimed water.
Through the establishment of a large-scale "environmental protection complex" integrating 7 treatment lines, the center can meet the various sewage treatment needs of enterprises in the base, ensure the stability and reliability of industrial wastewater treatment in the park, and discharge with high standards for a long time.
The center has an industrial water treatment R&D center, with a construction area of about 5,000 m2 and an overall investment of about 45 million yuan, with 8 sets of pilot test devices for various wastewater treatment, 20 sets of small test devices, 468 sets (sets) of large-scale high-end testing equipment such as gas chromatography and mass spectrometry, and 415 analysis and testing capabilities, helping to enhance the innovation ability of Fangyang Water Industry Water Treatment.
■ Engineering innovation
In accordance with the principle of "quality collection and classified treatment", the production wastewater is divided into 5 treatment lines and the production wastewater is divided into 2 treatment lines to solve the problem of chemical wastewater treatment and reduce treatment costs and carbon emissions.
Establish a centralized recycling and reuse center for industrial wastewater in the park, strictly control the high-level 70% reuse requirements, and promote regional water-saving management in a market-oriented manner through the establishment of a reclaimed water co-ordination transaction price mechanism, so as to improve the utilization rate of regional water resources.
We will build an integrated water supply and drainage system of "water supply, sewage treatment, sewage recycling, high-salt wastewater treatment, standard tail water purification, and deep-sea discharge", and consider the synergy and constraints between each system as a whole, so as to improve the efficiency of chemical wastewater treatment, reduce the cost of water supply and wastewater treatment, and realize the full life cycle management of water use in the park.
Establish a centralized collection and allocation tank area of 120,000 tons of sewage and wastewater, and allocate and treat sewage and wastewater resources through the centralized sewage regulation mode to reduce the cost of sewage treatment; At the same time, integrate the first-level and second-level pollution prevention and control systems in the park, coordinate the allocation of emergency response resources in the park, and improve the emergency prevention and control and management level of the park.
Develop a governance model that integrates the upstream and downstream of third-party governance, give full play to the scale effect of pollution control projects, save the investment, operation and labor costs of pollution control infrastructure for industrial projects, and create conditions for the expansion and reproduction of industrial projects.
■ Benefit analysis
1. Environmental benefits
Through the establishment of a large-scale "industrial water treatment complex" integrating third-party treatment, centralized treatment, reuse and high-salt concentrated water treatment, it is conducive to the efficient recycling of water resources in the park, reducing the discharge of sewage and wastewater by 25 million tons per year, and ensuring the stability and reliability of industrial wastewater treatment in the park and achieving long-term high-standard discharge. Through the centralized sewage regulation mode, the sewage and wastewater are resourcefully allocated and treated, the sewage treatment cost is reduced, the utilization rate of facilities is improved, and the pollution reduction, carbon reduction and synergy of chemical water treatment are realized.
Second, economic and social benefits
By building a bridge for reclaimed water trading and improving policy supporting measures, the market can flexibly allocate water resources, realize the free flow and dynamic adjustment of "water" elements in the park, improve the regional water shortage situation, and improve the utilization rate of regional water resources.
Through the establishment of an integrated water supply and drainage management system, the synergy and constraints between various systems such as water supply, sewage treatment, and sewage recycling and reuse are considered as a whole, so as to improve the efficiency of chemical wastewater treatment, reduce the cost of water supply and drainage treatment, and realize the full life cycle management of water use in the park.
By exploring and establishing the upstream and downstream integration mode of third-party sewage treatment, it can avoid the repeated construction and overtreatment of enterprise pretreatment and centralized sewage treatment in the park, save 10% of sewage custody investment, and reduce the cost of enterprise pollution control by 3 yuan/ton; In addition, it can enable upstream enterprises to concentrate manpower, land and other resources for production, let professionals do professional things, increase the income of industrial projects, and create conditions for the expansion and reproduction of industrial projects. This model is included in the pilot of the comprehensive environmental management hosting service model and the pilot of the third-party treatment of environmental pollution, focusing on promoting and publicizing the report.
