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Process for treating wastewater generated after saline-alkali soil improvement

A technology of soil improvement and treatment process, applied in multi-stage water treatment, water/sewage treatment, water treatment parameter control, etc., can solve problems such as poor recovery rate and desalination effect, ecological environment pollution, low recovery rate, etc., to achieve Improve the recovery rate, protect the environment, and reduce the effect of salt content

Inactive Publication Date: 2016-10-26
SHANDONG SUNWAY LANDSCAPE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to improve the soil structure of saline-alkali soil, reduce the soil alkalinity, total salt content and pH value of saline-alkali soil, so that the improved saline-alkali soil can be used for agricultural development and the construction of ecological protection forests, and at the same time in the improvement process A large amount of waste water will appear in the water, which not only causes waste, but also will be discharged indiscriminately after treatment, polluting the ecological environment, and the recovery rate and desalination effect of saline-alkali washing water are poor. less, but the recovery rate is low, still can not meet the needs of saline-alkali washing water recovery, therefore, we propose a treatment process for wastewater after saline-alkali soil improvement

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 1, a kind of process for the treatment of waste water after saline-alkali soil improvement, is characterized in that: comprise the steps:

[0021] The first step, collection, is provided with a drainage tank around the saline-alkali land, with a drainage plate at the bottom of the drainage tank, and at the same time, a filter is installed at the outlet of the drainage tank to isolate large suspended matter, collect waste water to be treated and guide it to cistern;

[0022] In the second step, settling, a grid fine filter is installed at the water inlet of the reservoir to isolate and remove the fine suspended matter, and settle in the reservoir for 3.5 hours, and transfer the wastewater from the upper layer to the aeration tank, and wait for 25 The sludge formed by re-precipitation in minutes is transported to the sludge tank;

[0023] The third step, adjustment, transfer the settled wastewater to the aeration tank, add regulators to adjust, ensure that the pH value i...

Embodiment 2

[0028] A process for treating waste water after saline-alkali soil improvement, comprising the steps of:

[0029] 1, a kind of process for the treatment of waste water after saline-alkali soil improvement, is characterized in that: comprise the steps:

[0030] The first step, collection, is provided with a drainage tank around the saline-alkali land, with a drainage plate at the bottom of the drainage tank, and at the same time, a filter is installed at the outlet of the drainage tank to isolate large suspended matter, collect waste water to be treated and guide it to cistern;

[0031] In the second step, settling, a grid fine filter is installed at the water inlet of the reservoir to isolate and remove the fine suspended matter, and settle in the reservoir for 4.5 hours, and transfer the wastewater from the upper layer to the aeration tank, and wait for 30 The sludge formed by re-precipitation in minutes is transported to the sludge tank;

[0032] The third step, adjustment...

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PUM

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Abstract

The invention discloses a process for treating wastewater generated after saline-alkali soil improvement. The process comprises the steps of collection, sedimentation, regulation, filtration, desalination and detection. According to the process, water resources are recycled, the environment is protected, new water is saved by almost 20,000 tons every year, and cost is saved; a device has a multistage filtering function, water quality judgment is conducted before a concentrated water collection box, and the environment can be effectively protected; furthermore, resource recovery can be achieved, distribution and recovery efficiency is high, purification effect is good, and operation is stable. By the adoption of the process, the content of salt in saline-alkali soil washing water can be effectively reduced and the recovery rate of washing water can be increased on the premise that energy consumption is low.

Description

technical field [0001] The invention relates to the field of waste water treatment, in particular to a process for treating waste water after soil improvement in saline-alkali land. Background technique [0002] Saline-alkali soil is a general term for saline soil and alkaline soil. At present, the most effective way to control saline-alkali soil is to discharge salinity and alkali from the land by washing the soil. In the actual washing process, a large amount of saline-alkali washing water is often discharged directly without treatment. The washing water with high salt concentration seriously threatens the safety of groundwater and public water bodies, and water resources are seriously wasted. According to surveys, China's salinized land has reached hundreds of thousands of square kilometers, a considerable part of which is distributed in Northwest China, such as Xinjiang, Inner Mongolia, Gansu, Qinghai, Shaanxi and other provinces or autonomous regions. The problem of s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/08
CPCC02F9/00C02F1/001C02F1/283C02F1/42C02F1/444C02F7/00C02F2001/007C02F2209/003C02F2301/08C02F2303/02
Inventor 王胜
Owner SHANDONG SUNWAY LANDSCAPE TECH