铬渣污染场地的表层土壤由于粘性大、粒径小且污染严重成为治理的难点。
The difficulty of the remediation technology was that the topsoil of the site is sticky, small particle size and severely polluted.
用于输送粘性、易结渣介质管道上的球阀应使用全通径的，方便定期的刮蜡吹扫器通过。
Used for transportation of slagging in viscosity, easy to medium pipeline ball valve full bore should be used to facilitate regular scraping wax blowing through.
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