Unlock instant, AI-driven research and patent intelligence for your innovation.

System and process for treating industrial wastewater with high hardness, high ammonia-nitrogen, high alkalinity and high salt content

A high-ammonia-nitrogen, high-alkalinity, industrial wastewater technology, applied in the field of water treatment, can solve the problems of increased operational difficulty, large equipment investment, and high treatment costs, and achieve the effects of saving operating costs and manpower, reducing investment costs, and reducing carbon emissions

Active Publication Date: 2018-05-29
INNER MONGOLIA JIUKE KANGRUI ENVIRONMENTAL TECH
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned process has the disadvantages of repeatedly adding acid and alkali to adjust the pH, resulting in complex process, large equipment investment, increased operation difficulty, high treatment cost, and low recovery rate of the membrane system, which eventually leads to a large amount of water in the evaporation crystallization system and high operating costs.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • System and process for treating industrial wastewater with high hardness, high ammonia-nitrogen, high alkalinity and high salt content

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A high-hardness, high-ammonia-nitrogen, high-alkalinity, and high-salt industrial wastewater treatment system, which includes a regulating pool 1, a high-density pool, a stripping tower 5, a carbon remover 6, submerged ultrafiltration 7, a concentrated liquid circulation tank 8, and a draw liquid Circulation tank 9, first heat exchanger 10, second heat exchanger 11, ammonia gas absorption tower 12, activated carbon filter 13, dilution buffer tank 14, draw dilution tank 15, draw concentrate tank 16; concentrate circulation Tank 8 and draw liquid circulation tank 9 are separated by forward osmosis membrane,

[0039] The water outlet of regulating tank 1 is communicated with the water inlet of high-density tank, and the water outlet of high-density tank is communicated with the water inlet of stripper 5 tops, and the sludge outlet of high-density tank is communicated with sludge tank 17; The air port is connected with the steam source 18, the water outlet of the stripper 5...

Embodiment 2

[0046] Utilize a kind of high hardness, high ammonia nitrogen, high alkalinity and high salinity industrial wastewater treatment system described in embodiment 1 to process the process of high hardness, high ammonia nitrogen, high alkalinity and high salt industrial wastewater, comprising the following steps:

[0047] (1) Conditioning process: add high hardness, high ammonia nitrogen, high alkalinity and high salt industrial wastewater from different sources into the adjustment tank 1 for mixing and conditioning, and do not add any substances in the adjustment tank 1, on the one hand to prevent the wastewater from directly entering the reaction On the other hand, it prevents the hardness, ammonia nitrogen content and alkalinity in the wastewater entering the reaction tank from fluctuating, which will impact the subsequent reaction treatment, resulting in insufficient reaction or chemical dosage. Problems such as being too large belong to the physical adjustment process, without...

Embodiment 3

[0057] Utilize a kind of high hardness, high ammonia nitrogen, high alkalinity and high salinity industrial wastewater treatment system described in embodiment 1 to process the process of high hardness, high ammonia nitrogen, high alkalinity and high salt industrial wastewater, comprising the following steps:

[0058] (1) Conditioning process: add high hardness, high ammonia nitrogen, high alkalinity and high salt industrial wastewater from different sources into the adjustment tank 1 for mixing and conditioning, and do not add any substances in the adjustment tank 1, on the one hand to prevent the wastewater from directly entering the reaction On the other hand, it prevents the hardness, ammonia nitrogen content and alkalinity in the wastewater entering the reaction tank from fluctuating, which will impact the subsequent reaction treatment, resulting in insufficient reaction or chemical dosage. Problems such as being too large belong to the physical adjustment process, without...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
turbidityaaaaaaaaaa
hardnessaaaaaaaaaa
hardnessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a system for treating industrial wastewater with high hardness, high ammonia-nitrogen, high alkalinity and a high salt content. The system comprises a regulating basin, a high-density basin, a stripping tower, a carbon remover, a submerged ultra-filter, a concentrated solution circulating tank, a drawn solution circulating tank, a first heat exchanger, a second heat exchanger, an ammonia gas absorption tower, an activated carbon filter, a diluent buffer tank, a diluent drawing tank and a concentrated solution drawing tank. The concentrated solution circulating tank is separated from the drawn solution circulating tank by forward osmosis membranes. The invention further discloses a process for treating the industrial wastewater with the high hardness, the high ammonia-nitrogen, the high alkalinity and the high salt content. The process includes (1) conditioning working procedures, (2) precipitation working procedures, (3) ammonia, nitrogen and carbon removal working procedures, (4) ultra-filtration working procedures and (5) forward osmosis working procedures. The system and the process have the advantages that the system is simple in structure and reasonablein design, the industrial wastewater with the high hardness, the high ammonia-nitrogen, the high alkalinity and the high salt content can be treated by the aid of the system, accordingly, the runningcost, labor and energy can be saved, and waste gas and waste heat can be recycled.

Description

Technical field: [0001] The invention relates to a high-hardness, high-ammonia-nitrogen, high-alkalinity, and high-salt industrial wastewater treatment system and process, belonging to the field of water treatment. Background technique: [0002] Coal chemical, petrochemical and other industries will produce a large amount of washing wastewater, process system condensate, chemical water station drainage, circulating water sewage, etc., which are characterized by high salt content, high hardness, high alkalinity, and high ammonia nitrogen. , the composition is complex and difficult to handle. With the adjustment of the national environmental protection policy, the state requires industrial wastewater discharge enterprises to maximize the reuse of industrial wastewater with high hardness, high ammonia nitrogen, high alkalinity and high salt content, and more stringent requirements for water-deficient areas and environmentally sensitive areas to achieve zero discharge of industr...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/10C02F101/16
CPCC02F9/00C02F1/445C02F1/444C02F1/20C02F1/04C02F1/001C02F2101/16C02F1/66C02F1/56C02F1/5236C02F2301/08Y02A20/131
Inventor 李买军赛世杰张娜王俊辉刘慧党平李战胜李思序杭天浜
Owner INNER MONGOLIA JIUKE KANGRUI ENVIRONMENTAL TECH