System for irrigating and repairing salt and alkali wet land by paper wastewater

Abstract

The invention relates to a system for irrigating and repairing a salt and alkali wet land by paper wastewater. A non-irrigated reference region connecting rod is arranged to be connected to an intermittent irrigating region. The intermittent irrigating region is connected to a plurality of equally spaced water inlets. The upper part of the intermittent irrigating region is connected to a continuous irrigating region. The continuous irrigating region is connected to an intake, a sand filter pond, a diversion dam, a sewer, a main dam and an inflow water-gate. The plurality of equally spaced water inlets and the inflow water-gate are jointly connected to an effluent of a pond system; a 2000 mu reed wet land is selected as an ecological remediation demonstration project and the paper wastewater is irrigated continuously. The model project area is 653*153m=99909m<2>, 9.99hm<2>, graded from (L1-L5); the paper wastewater flows through the graded wet land successively according to a set flow;the irrigating mode is constant irrigation which is low in flow rate, equal in irrigating depth and equal in hydraulic load; irrigation is carried out for 15 days at an interval of 15 days, and the effluent enters a drainage channel. The system has the beneficial effects of repairing the ecological system of the salt and alkali wet land and protecting the natural environment.

Description

technical field [0001] The invention relates to the field of ecological system improvement, in particular to a saline-alkali wetland system for irrigation and restoration of papermaking wastewater. Background technique [0002] It is known that human beings easily produce waste water in the production of paper. With the discharge of waste water from paper mills to pollute water sources, people have begun to pay attention to environmental issues. It is difficult for the general paper-making waste water treatment system on the market to meet the standard, and it takes a lot of manpower and material resources. Invisible Among them, the cost of papermaking is increased. Papermaking wastewater not only affects the natural environment, but also seeps into groundwater, endangering human health. There is no good solution to this problem. Contents of the invention [0003] The purpose of the present invention is to restore the saline-alkali wetland system by providing papermaking w...

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Problems solved by technology

[0002] It is known that human beings easily produce waste water in the production of paper. With the discharge of waste water from paper mills to pollute water sources, people have begun to pay attention to environmental issues. It is difficult for the general paper-making waste water treatment system on the market to meet the standard, and it takes a lot of manpower and material resources. Invisible Among them, the cost of papermaking is increased. Papermaking wastewater not only affects the natural environment, but also seeps into groundwater, endangering human health. There is no good solution to this problem

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