Novel multifunctional scale inhibitor for leachate deep treatment

Abstract

The invention discloses a novel multifunctional scale inhibitor for leachate deep treatment. The novel multifunctional scale inhibitor comprises the following ingredients in percentage by mass: 3 to 15 percent of imidazoline corrosion inhibitors, 5 to 20 percent of acrylic acid- acrylic ester ternary polymers, 10 to 25 percent of alkyl epoxy carboxylate, 3 to 10 percent of polyepoxysuccinic acid, 3 to 15 percent of polyaspartic acid and 30 to 70 percent of water. The novel multifunctional scale inhibitor is invented by specially aiming at the characteristics of high hardness, high alkalinity, high heavy metal pollution concentration of the landfill leachate wastewater; ingredients with certain scale inhibition, dispersion and corrosion inhibition effects are compounded; the synergistic interaction effect is achieved. The novel multifunctional scale inhibitor has the advantages that the price is low; the cost is low; the good effects are achieved on the corrosion inhibition of the metal pipeline in the leachate deep treatment and the scale inhibition of a reverse osmosis membrane.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment and relates to a novel multifunctional scale inhibitor used for advanced treatment of leachate. Background technique [0002] Landfill leachate wastewater has high concentrations of total nitrogen, ammonia nitrogen, alkalinity, hardness, and heavy metal pollutants. However, due to poor biochemical treatment effects, membrane methods are generally used for advanced treatment. [0003] The first-stage landfill leachate membrane treatment system is generally divided into two-stage reverse osmosis. The first-stage reverse osmosis needs to feed water from behind the core filter, and the second-stage reverse osmosis treats the first-stage permeated water. The effluent from the raw water storage tank is supplied by the pump to the first-stage landfill leachate membrane treatment equipment. First, it enters the core filter booster pump, and the effluent from the filter element booster pump en...

AI Technical Summary

Problems solved by technology

[0004] In the prior art, for the scale inhibitors for the advanced treatment of leachate wastewater, there is often only a single antiscalant that has a good scale inhibition effect on the reverse osmosis membrane and a poor corrosion inhibition effect on metal pipelines, or has a good corrosion inhibition effect on metal pipelines. However, there are disadvantages such as poor scale inhibition effect on reverse osmosis membranes. There are not many scale inhibitors that can effectively prevent reverse osmosis membrane fouling and metal pipeline corrosion at the same time. and reverse osmosis membrane scale inhibition effect is limited

Therefore, in the advanced treatment of leachate, this multifunctional antiscalant technology, which can effectively prevent reverse osmosis membrane fouling and metal pipeline corrosion, needs to be improved.

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